Me & My Shadows: groundhog & babies enjoy a spring stroll in the Pocono Mountains of northeast Pennsylvania.
Lunching with Avatar: squirrel enjoys peanuts as lunchtime snack on deck of a house in the Pocono Mountains of northeastern Pennsylvania.
Ice & Rock Climber: mountain goat grazing alongside icy wayside of the Road to the Sun in Montana's Glacier National Park.
A Lonely Senior. Gus lost his companion of many years in June of 2011. Ida was euthanized at the age of 25, after a vet determined that she had liver cancer. The pair had been the oldest couple at the zoo.
Bison in Yellowstone National Park.
Grasshopper, South Dakota style. This metallic-looking one was in the Badlands.
Photographers in Yellowstone. Between you and the animals, you're likely to see men and women hauling tripods and cameras with huge lenses. The residents -- here, elk -- are on the far side of the river.
Itching post. This bison was delightedly scratching the lower half of his fuselage on a post at an information sign in South Dakota's Badlands National Park.